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Published Online: 02 July 2019

Earing profile and wall thickness prediction of a cylindrical cup for dual-phase steels using different yield criteria in FE simulation

AIP Conference Proceedings 2113, 180011 (2019); https://doi.org/10.1063/1.5112749
Rui L. Amaral1,a), Abel D. Santos2, Sara S. Miranda1, and José César de Sá2
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ABSTRACT
Numerical methods are an important requirement for the evaluation and analysis of sheet metal forming processes. In order that quality and development of the final component can be reproduced, it is important a higher accuracy of the obtained numerical results, which in turn needs the most correct material behavior characterization. This paper presents a study of the earing height profile, wall thickness distribution and punch force evolution for dual-phase steel sheets, using a deep drawing cylindrical cup test. Finite element simulations and experimental tests have been performed in order to evaluate and compare the obtained results for this kind of advanced high strength steels. The numerical simulation of the cylindrical cup test was carried out using a user subroutine in the FE code with different implemented anisotropic yield criteria, namely Hill48, Barlat 91 and CPB06. Concerning results for earing height profile and wall thickness distribution it is observed that Hill48 and CPB06 give similar predictions and close to experimental points. On the other hand, the predicted punch force evolution is not very sensitive to the selected yield criteria and their results are very closer to experimental data.

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  1. Published by AIP Publishing.

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